Finding the Fourth Proportional to 1,410.42, 2,115.52 and 630.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,410.42 : 2,115.52 = 630.49 : x
2. Step 2: Convert to fraction form
   1,410.42/2,115.52 = 630.49/x
3. Step 3: Cross multiply
   1,410.42x = 2,115.52 × 630.49
4. Step 4: Simplify right side
   1,410.42x = 1,333,814.20
5. Step 5: Solve for x
   x = 1,333,814.20/1,410.42
6. Step 6: Final answer
   x = 945.69